Các câu hỏi tương tự
1 .trung binh cong cua hai phan so la 5/12 .neu tang phan so thu nhat gap 2 lan thi trung binh cong cua chung bang 2/3 .tim hai phan so do .
2.trung binh cong cua ba phan so la 13 /36 .neu tang phan so thu nhat gap 2 lan thi trung binh cong cua chung bang 19/36 ,cho biet phan so thu hai lon hon phan so thu ba 1 /12. tim ba phan so do .
trung binh cong cua hai so la 42,5 tim hai so do biet rang so be bang 2/3 so lon
Trung binh cong cua ba so do la 78.Tim ba so do biet so thu nhat gap ba lan so thu hai,so thu hai gap ba lan so thu ba.
Trung binh cong cua 2 so la 87,25 biet so be gap 2 lan hieu hai so .Tim so lon
trung binh cong cua 3 so la 4 . Tim ba so do , biet rang so thu hai lon hon so thu nhat la 1,2 va be hon so thu ba la 2,4
Trung binh cong hai so thap phan la 27.8 . Tim hai so do biet rang neu giam 6 don vi vao so lon thi ta duoc so be
Giup minh voi
tim hieu cua hai so biet so lon gap 4 lan so be va biet khi cong hai so do voi tong cua chung thi bang 480 hieu cua hai so do la bao nhieu
trung binh cong cua hai so la 257.9.so be it hon so lon la 95.8. tim hai so do
Cho trung binh cong cua hai so la 82. So lon hon so be la 15. Tim hai so do.